It took him half an hour _____ the work. A.doing B.to do C.did
I always get up ______ six o’ clock ______ the morning.
It ______ Mr. Smith half an hour _____ get to his office.
Mary, ______ girl, wants to be a doctor.
Our teacher always helps us ______ our English.
--- _____ do you ______the book? --- It’s very interesting.